Appendix - BlueField DHCP Discover
|
Vendor Class String in DHCP Discover |
Originator of the DHCP Discover |
|
NVIDIA/BF/OOB |
BlueField SoC Arm OS over 1GbE OOB |
|
NVIDIA/BF/PXE |
BlueField SoC UEFI BIOS over either 1GbE OOB or high-speed ports |
|
NVIDIA/BF/DP |
BlueField SoC Arm OS over high-speed ports |
|
NVIDIA/BF/BMC |
BlueField BMC over 1GbE OOB |
|
BF2Client |
BlueField OS/UEFI in older versions |
|
PXEClient |
BlueField OS/UEFI in older versions |
|
HTTPClient |
BlueField OS/UEFI in older versions |
Sent from the BlueField UEFI BIOS to the DCHP server:
0.0.0.0 -> 255.255.255.255 DHCP 370 DHCP Discover - Transaction ID 0xfd2f32f1
192.168.254.119 -> 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0xfd2f32f1
0.0.0.0 -> 255.255.255.255 DHCP 382 DHCP Request - Transaction ID 0xfd2f32f1
192.168.254.119 -> 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0xfd2f32f1
aa:bb:cc:dd:ee:ff -> Broadcast ARP 60 Who has 192.168.254.119? Tell 192.168.254.139
gg:hh:ii:jj:kk:ll -> aa:bb:cc:dd:ee:ff ARP 60 192.168.254.119 is at gg:hh:ii:jj:kk:ll
192.168.254.139 -> 192.168.254.119 TFTP 98 Read Request, File: /grubaa64.efi, Transfer type: octet, tsize\000=0\000, blksize\000=1400\000, windowsize\000=4\000
192.168.254.119 -> 192.168.254.139 TFTP 84 Option Acknowledgement, tsize\000=2414472\000, blksize\000=1400\000, windowsize\000=4\000
192.168.254.139 -> 192.168.254.119 TFTP 72 Error Code, Code: Option negotiation failed, Message: User aborted the transfer
192.168.254.139 -> 192.168.254.119 TFTP 90 Read Request, File: /grubaa64.efi, Transfer type: octet, blksize\000=1400\000, windowsize\000=4\000
192.168.254.119 -> 192.168.254.139 TFTP 70 Option Acknowledgement, blksize\000=1400\000, windowsize\000=4\000
192.168.254.139 -> 192.168.254.119 TFTP 60 Acknowledgement, Block: 0
192.168.254.119 -> 192.168.254.139 TFTP 1446 Data Packet, Block: 1
192.168.254.119 -> 192.168.254.139 TFTP 1446 Data Packet, Block: 2
192.168.254.119 -> 192.168.254.139 TFTP 1446 Data Packet, Block: 3
Ethernet II, Src: aa:bb:cc:dd:ee:ff (aa:bb:cc:dd:ee:ff), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: aa:bb:cc:dd:ee:ff (aa:bb:cc:dd:ee:ff)
Address: aa:bb:cc:dd:ee:ff (aa:bb:cc:dd:ee:ff)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IP (0x0800)
Internet Protocol Version 4, Src: 0.0.0.0 (0.0.0.0), Dst: 255.255.255.255 (255.255.255.255)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
Total Length: 368
Identification: 0x61c7 (25031)
Flags: 0x00
0... .... = Reserved bit: Not set
.0.. .... = Don't fragment: Not set
..0. .... = More fragments: Not set
Fragment offset: 0
Time to live: 64
Protocol: UDP (17)
Header checksum: 0x17b7 [validation disabled]
[Good: False]
[Bad: False]
Source: 0.0.0.0 (0.0.0.0)
Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
Source port: bootpc (68)
Destination port: bootps (67)
Length: 348
Checksum: 0xe557 [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
Bootstrap Protocol
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xfd2f32f1
Seconds elapsed: 0
Bootp flags: 0x8000 (Broadcast)
1... .... .... .... = Broadcast flag: Broadcast
.000 0000 0000 0000 = Reserved flags: 0x0000
Client IP address: 0.0.0.0 (0.0.0.0)
Your (client) IP address: 0.0.0.0 (0.0.0.0)
Next server IP address: 0.0.0.0 (0.0.0.0)
Relay agent IP address: 0.0.0.0 (0.0.0.0)
Client MAC address: aa:bb:cc:dd:ee:ff (aa:bb:cc:dd:ee:ff)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type
Length: 1
DHCP: Request (3)
Option: (54) DHCP Server Identifier
Length: 4
DHCP Server Identifier: 192.168.254.119 (192.168.254.119)
Option: (50) Requested IP Address
Length: 4
Requested IP Address: 192.168.254.139 (192.168.254.139)
Option: (57) Maximum DHCP Message Size
Length: 2
Maximum DHCP Message Size: 65280
Option: (55) Parameter Request List
Length: 35
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (4) Time Server
Parameter Request List Item: (5) Name Server
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (13) Boot File Size
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (17) Root Path
Parameter Request List Item: (18) Extensions Path
Parameter Request List Item: (22) Maximum Datagram Reassembly Size
Parameter Request List Item: (23) Default IP Time-to-Live
Parameter Request List Item: (28) Broadcast Address
Parameter Request List Item: (40) Network Information Service Domain
Parameter Request List Item: (41) Network Information Service Servers
Parameter Request List Item: (42) Network Time Protocol Servers
Parameter Request List Item: (43) Vendor-Specific Information
Parameter Request List Item: (50) Requested IP Address
Parameter Request List Item: (51) IP Address Lease Time
Parameter Request List Item: (54) DHCP Server Identifier
Parameter Request List Item: (58) Renewal Time Value
Parameter Request List Item: (59) Rebinding Time Value
Parameter Request List Item: (60) Vendor class identifier
Parameter Request List Item: (66) TFTP Server Name
Parameter Request List Item: (67) Bootfile name
Parameter Request List Item: (97) UUID/GUID-based Client Identifier
Parameter Request List Item: (128) DOCSIS full security server IP [TODO]
Parameter Request List Item: (129) PXE - undefined (vendor specific)
Parameter Request List Item: (130) PXE - undefined (vendor specific)
Parameter Request List Item: (131) PXE - undefined (vendor specific)
Parameter Request List Item: (132) PXE - undefined (vendor specific)
Parameter Request List Item: (133) PXE - undefined (vendor specific)
Parameter Request List Item: (134) PXE - undefined (vendor specific)
Parameter Request List Item: (135) PXE - undefined (vendor specific)
Option: (97) UUID/GUID-based Client Identifier
Length: 17
Client Identifier (UUID): c24e2ad6-a730-ec11-8000-08c0eb58d8ec
Option: (94) Client Network Device Interface
Length: 3
Major Version: 3
Minor Version: 16
Option: (93) Client System Architecture
Length: 2
Client System Architecture: Unknown (11)
Option: (60) Vendor class identifier
Length: 13
Vendor class identifier: NVIDIA/BF/PXE
Option: (255) End
Option End: 255
Note the "Vendor class identifier" value in line 134.